I believe the universe has empty space and atomos (atoms) are invisible!I think atomos are as solid and the same throughout!I believe in ideas instead of experiments.
Democritus 460 bce - 370 bce
Dalton 1766-1844
Let me use air pressure and water vapor to devise my theory.All matter is made up of atoms!elements are composed of identical atomos.
Atomos have charges.The particle has an electric current.electrons float in a sea of charges.
J.J. Thompson 1856-1940
Ernest Rutherford 1871-1937
I will test the plum pudding model J.J. Thompson had.I will shoot tiny positively charged particles out of a particle gun, toward a thin sheet of gold foil.I will detect reflected particles of various angles.
Niels Bohr 1885-1962
electrons occupy specific or exact energy levels.energy levels are specific distances from the nucleus.There are specific amounts of energy that are required to move electrons to the next energy level.
electrons do not stay in a certain orbit.Let me model a wave equation to identify properties of a wave as well as a partticle.The wave equation can predict the probable location of electrons.